PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

207491O-Ring

Hamilton Jet, Inc. · NSN 5331-01-626-4612 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-01-626-4612 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-626-4612. Primary manufacturer part number: 207491.
Features
  • O-Ring — FSC 5331
  • Hardness Rating: 70.0 SHORE DUROMETER A NOMINAL
  • Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
  • Center Hole Diameter: 11.0 MILLIMETERS NOMINAL MM
  • Cross-Sectional Height: 4.0 MILLIMETERS NOMINAL MM
  • 1 verified cross-reference
  • Primary manufacturer: Hamilton Jet, Inc.
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Rubber Butadiene-Acrylonitrile Class Nbr construction
General Description

The O-Ring, cataloged under National Stock Number 5331-01-626-4612, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Hamilton Jet, Inc.. Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5331-01-626-4612
Primary Part Number207491
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerHamilton Jet, Inc.
StatusACTIVE
Hardness Rating70.0 SHORE DUROMETER A NOMINAL
MaterialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
Center Hole Diameter11.0 MILLIMETERS NOMINAL MM
Cross-Sectional Height4.0 MILLIMETERS NOMINAL MM
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5365-01-268-9131 INTERCHANGEABLE
Plug,machine Thread
5340-01-421-632020749-1 INTERCHANGEABLE
Fastener,pawl
Skylock Industries
5310-01-731-278420-74-91 INTERCHANGEABLE
Nut,self-Locking,hexagon
Dana Commercial Vehicle Manufacturing, Llc Dba Dana Commercial Vehicle Products
Cross-Reference Index
Part NumberManufacturer
207491 PRIMARY Hamilton Jet, Inc. (USA)
Related Parts
5365-01-268-9131INTERCHANGEABLE
PLUG,MACHINE THREAD
5340-01-421-6320INTERCHANGEABLE
FASTENER,PAWL
20749-1
5310-01-731-2784INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
20-74-91

Frequently Asked Questions

What is NSN 5331-01-626-4612?

NSN 5331-01-626-4612 is a O-Ring, manufactured by Hamilton Jet, Inc., classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-01-626-4612?

NSN 5331-01-626-4612 has 1 cross-referenced part number: 207491 (Hamilton Jet, Inc.).

What NSN replaces 5331-01-626-4612?

There are 3 known substitutes for 5331-01-626-4612: 5365-01-268-9131, 5340-01-421-6320, 5310-01-731-2784. Verify interchangeability with system specifications before substitution.

What are the specifications of 207491?

Key specifications for 207491: Hardness Rating: 70.0 SHORE DUROMETER A NOMINAL; End Item Identification: WATERJET, MARINE; Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR; Center Hole Diameter: 11.0 MILLIMETERS NOMINAL MM. 5 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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